As this big bully approaches, you really seem to have no choice, at least if you want to avoid being a snack. So you spread your legs and ask, in the most enticing manner you can manage, "Perhaps you'd like to work up an appetite first?"
It at least gets him to slow down. "You don't really think your ass is going to get you out of this, do you?"
"Well, it might." you respond, "and it will be fun for both of us in any case."
Thankfully, boys are easy to convince with arguments like this. Your assailant smiles and starts removing his pants while you try to stimulate your most sensitive spot. [The ass will likely just plunge right in and you do not want to be used dry if you can avoid it.]
As he kneels between your thighs and starts to enter you, you do your best to look eager rather than triumphant. After all, even now, you can lose so very easily. But as he starts to push in 6 inches and withdraw 5, and then in another 6 and out 5 [or some such figure. You are a bit too distracted to measure accurately], he is slowly unbirthing himself into your womb. How he is managing this is a mystery to you. You would think he couldn't bend that way for one thing. But several boys have thrust themselves entirely into you and this nitwit looks to be doing the same.
You still have dangers to overcome. If he realizes what is happening, he can pull out unless he is really deep in. Fortunately boys are seriously distracted in cases like this, but you still have to smile and tell him how much you are enjoying his efforts and encourage him to keep at it. In this case, it is fortunate that he is not a minute man. In fact you are tempted to laugh at him and call him sterile. But of course that would quickly result in your being swallowed. So you cheer him on and insist you are enjoying him tremendously.
The trouble is that you are. And that opens up a far more disgusting danger. You have heard that the very worst number of times for a girl to have sex is one. If having a boy once is good, two or more is better. And there are lots of boys where zero is obviously the best number. You have unbirthed 3, no... 4 boys, like this before and each one you popped him out and became his girlfriend. 3 of them, you ended up eating anyway, after an argument or his looking at other girls, but you still threw yourself at them. So there is a danger you will be begging this slob to do what he wants to with you. You think you can resist that horrid fate. You had liked those other boys, not wanted them to die painfully, and by this point you were wildly approving of what they were doing, not trying to fake that. So he should be a meal soon, But there is a chance you will be begging him to do anything but leave you.
But for right now, all is well. He continues to push himself into your damp desire and as you explode in ecstasy for the 2nd time, his arms are wrapped around your waist, in fact below your waist, as he pushes himself into you. You are not sure if you are pleased or annoyed that he seems to have no idea he is doomed. But it makes little difference as he continues to concentrate on poling you until all that is visible of him is a pair of hands that finger you, first from the outside and then from the inside.
As he is installed in your womb, you rub this new mountain rather lovingly. As you had feared, you do wish you could let him out and be his girl. Happily, or sadly, you see no reason to think he would not eat you on the spot, and so for your own safety, he will have to be digested.
But as you try to decide if you are happy or sad about that, you see little Miss Mouse fearfully sticking her head around the corner. When she sees you, she comes the rest of the way around the corner, revealing a massive belly that tells you what happened to the last of the bullies. But ... "How...?"
"There is a little hidey-hole right around the corner. I dived into it and he rushed past me before he realized I wasn't ahead of him anymore. He's slow and didn't realize I was behind him until I was swallowing him." So Miss Mouse is not nearly as mousy as you had thought. And you had not thought of the next thing she says either. "I'm Jane. I owe you a meal, so would you like to eat me in my room or your room?